GREEN LED BLINKS High

Pro GREEN LED BLINKS Fault Code

Also written as GREENLEDBLINKS — same fault.

The Pro GREEN LED BLINKS fault code means: your boiler has power but isn't starting up, which usually indicates an internal electrical issue or a loose connection.. It appears on 1 Pro model in our database.

Call an engineer soon

Book a Gas Safe engineer within 24 to 48 hours. Your boiler may be unsafe or could break down completely if left.

Technical description: Mains supply present, check fuse F1 or control board connectors.
Typical repair cost £120-280 (including labour)

Engineer required

This fault requires a Gas Safe registered engineer. Do not attempt gas-related repairs yourself.

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Pro models that show the GREEN LED BLINKS fault code

Click a model for the full fault code list and model-specific repair notes.

Source

Pro GREEN LED BLINKS fault code information on this page is sourced and cross-checked against the official Pro service / installation manuals for each affected model.

Reviewed by the BoilerFaultCodes Editorial Team · Last reviewed 7 July 2026